| 1 | /* Copyright (C) 1991,92,93,95,96,97,98,99,2000 Free Software Foundation, Inc. |
|---|
| 2 | This file is part of the GNU C Library. |
|---|
| 3 | |
|---|
| 4 | The GNU C Library is free software; you can redistribute it and/or |
|---|
| 5 | modify it under the terms of the GNU Lesser General Public |
|---|
| 6 | License as published by the Free Software Foundation; either |
|---|
| 7 | version 2.1 of the License, or (at your option) any later version. |
|---|
| 8 | |
|---|
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 12 | Lesser General Public License for more details. |
|---|
| 13 | |
|---|
| 14 | You should have received a copy of the GNU Lesser General Public |
|---|
| 15 | License along with the GNU C Library; if not, write to the Free |
|---|
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
|---|
| 17 | 02111-1307 USA. */ |
|---|
| 18 | |
|---|
| 19 | #ifndef __NETINET_IP_H |
|---|
| 20 | #define __NETINET_IP_H 1 |
|---|
| 21 | |
|---|
| 22 | #include <features.h> |
|---|
| 23 | #include <sys/types.h> |
|---|
| 24 | |
|---|
| 25 | #include <netinet/in.h> |
|---|
| 26 | |
|---|
| 27 | __BEGIN_DECLS |
|---|
| 28 | |
|---|
| 29 | struct timestamp |
|---|
| 30 | { |
|---|
| 31 | u_int8_t len; |
|---|
| 32 | u_int8_t ptr; |
|---|
| 33 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
|---|
| 34 | unsigned int flags:4; |
|---|
| 35 | unsigned int overflow:4; |
|---|
| 36 | #elif __BYTE_ORDER == __BIG_ENDIAN |
|---|
| 37 | unsigned int overflow:4; |
|---|
| 38 | unsigned int flags:4; |
|---|
| 39 | #else |
|---|
| 40 | # error "Please fix <bits/endian.h>" |
|---|
| 41 | #endif |
|---|
| 42 | u_int32_t data[9]; |
|---|
| 43 | }; |
|---|
| 44 | |
|---|
| 45 | struct iphdr |
|---|
| 46 | { |
|---|
| 47 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
|---|
| 48 | unsigned int ihl:4; |
|---|
| 49 | unsigned int version:4; |
|---|
| 50 | #elif __BYTE_ORDER == __BIG_ENDIAN |
|---|
| 51 | unsigned int version:4; |
|---|
| 52 | unsigned int ihl:4; |
|---|
| 53 | #else |
|---|
| 54 | # error "Please fix <bits/endian.h>" |
|---|
| 55 | #endif |
|---|
| 56 | u_int8_t tos; |
|---|
| 57 | u_int16_t tot_len; |
|---|
| 58 | u_int16_t id; |
|---|
| 59 | u_int16_t frag_off; |
|---|
| 60 | u_int8_t ttl; |
|---|
| 61 | u_int8_t protocol; |
|---|
| 62 | u_int16_t check; |
|---|
| 63 | u_int32_t saddr; |
|---|
| 64 | u_int32_t daddr; |
|---|
| 65 | /*The options start here. */ |
|---|
| 66 | }; |
|---|
| 67 | |
|---|
| 68 | #ifdef __USE_BSD |
|---|
| 69 | /* |
|---|
| 70 | * Copyright (c) 1982, 1986, 1993 |
|---|
| 71 | * The Regents of the University of California. All rights reserved. |
|---|
| 72 | * |
|---|
| 73 | * Redistribution and use in source and binary forms, with or without |
|---|
| 74 | * modification, are permitted provided that the following conditions |
|---|
| 75 | * are met: |
|---|
| 76 | * 1. Redistributions of source code must retain the above copyright |
|---|
| 77 | * notice, this list of conditions and the following disclaimer. |
|---|
| 78 | * 2. Redistributions in binary form must reproduce the above copyright |
|---|
| 79 | * notice, this list of conditions and the following disclaimer in the |
|---|
| 80 | * documentation and/or other materials provided with the distribution. |
|---|
| 81 | * 4. Neither the name of the University nor the names of its contributors |
|---|
| 82 | * may be used to endorse or promote products derived from this software |
|---|
| 83 | * without specific prior written permission. |
|---|
| 84 | * |
|---|
| 85 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
|---|
| 86 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
|---|
| 87 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
|---|
| 88 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
|---|
| 89 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
|---|
| 90 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
|---|
| 91 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
|---|
| 92 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
|---|
| 93 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
|---|
| 94 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
|---|
| 95 | * SUCH DAMAGE. |
|---|
| 96 | * |
|---|
| 97 | * @(#)ip.h 8.1 (Berkeley) 6/10/93 |
|---|
| 98 | */ |
|---|
| 99 | |
|---|
| 100 | /* |
|---|
| 101 | * Definitions for internet protocol version 4. |
|---|
| 102 | * Per RFC 791, September 1981. |
|---|
| 103 | */ |
|---|
| 104 | |
|---|
| 105 | /* |
|---|
| 106 | * Structure of an internet header, naked of options. |
|---|
| 107 | */ |
|---|
| 108 | struct ip |
|---|
| 109 | { |
|---|
| 110 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
|---|
| 111 | unsigned int ip_hl:4; /* header length */ |
|---|
| 112 | unsigned int ip_v:4; /* version */ |
|---|
| 113 | #endif |
|---|
| 114 | #if __BYTE_ORDER == __BIG_ENDIAN |
|---|
| 115 | unsigned int ip_v:4; /* version */ |
|---|
| 116 | unsigned int ip_hl:4; /* header length */ |
|---|
| 117 | #endif |
|---|
| 118 | u_int8_t ip_tos; /* type of service */ |
|---|
| 119 | u_short ip_len; /* total length */ |
|---|
| 120 | u_short ip_id; /* identification */ |
|---|
| 121 | u_short ip_off; /* fragment offset field */ |
|---|
| 122 | #define IP_RF 0x8000 /* reserved fragment flag */ |
|---|
| 123 | #define IP_DF 0x4000 /* dont fragment flag */ |
|---|
| 124 | #define IP_MF 0x2000 /* more fragments flag */ |
|---|
| 125 | #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */ |
|---|
| 126 | u_int8_t ip_ttl; /* time to live */ |
|---|
| 127 | u_int8_t ip_p; /* protocol */ |
|---|
| 128 | u_short ip_sum; /* checksum */ |
|---|
| 129 | struct in_addr ip_src, ip_dst; /* source and dest address */ |
|---|
| 130 | }; |
|---|
| 131 | |
|---|
| 132 | /* |
|---|
| 133 | * Time stamp option structure. |
|---|
| 134 | */ |
|---|
| 135 | struct ip_timestamp |
|---|
| 136 | { |
|---|
| 137 | u_int8_t ipt_code; /* IPOPT_TS */ |
|---|
| 138 | u_int8_t ipt_len; /* size of structure (variable) */ |
|---|
| 139 | u_int8_t ipt_ptr; /* index of current entry */ |
|---|
| 140 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
|---|
| 141 | unsigned int ipt_flg:4; /* flags, see below */ |
|---|
| 142 | unsigned int ipt_oflw:4; /* overflow counter */ |
|---|
| 143 | #endif |
|---|
| 144 | #if __BYTE_ORDER == __BIG_ENDIAN |
|---|
| 145 | unsigned int ipt_oflw:4; /* overflow counter */ |
|---|
| 146 | unsigned int ipt_flg:4; /* flags, see below */ |
|---|
| 147 | #endif |
|---|
| 148 | u_int32_t data[9]; |
|---|
| 149 | }; |
|---|
| 150 | #endif /* __USE_BSD */ |
|---|
| 151 | |
|---|
| 152 | #define IPVERSION 4 /* IP version number */ |
|---|
| 153 | #define IP_MAXPACKET 65535 /* maximum packet size */ |
|---|
| 154 | |
|---|
| 155 | /* |
|---|
| 156 | * Definitions for IP type of service (ip_tos) |
|---|
| 157 | */ |
|---|
| 158 | #define IPTOS_TOS_MASK 0x1E |
|---|
| 159 | #define IPTOS_TOS(tos) ((tos) & IPTOS_TOS_MASK) |
|---|
| 160 | #define IPTOS_LOWDELAY 0x10 |
|---|
| 161 | #define IPTOS_THROUGHPUT 0x08 |
|---|
| 162 | #define IPTOS_RELIABILITY 0x04 |
|---|
| 163 | #define IPTOS_LOWCOST 0x02 |
|---|
| 164 | #define IPTOS_MINCOST IPTOS_LOWCOST |
|---|
| 165 | |
|---|
| 166 | /* |
|---|
| 167 | * Definitions for IP precedence (also in ip_tos) (hopefully unused) |
|---|
| 168 | */ |
|---|
| 169 | #define IPTOS_PREC_MASK 0xe0 |
|---|
| 170 | #define IPTOS_PREC(tos) ((tos) & IPTOS_PREC_MASK) |
|---|
| 171 | #define IPTOS_PREC_NETCONTROL 0xe0 |
|---|
| 172 | #define IPTOS_PREC_INTERNETCONTROL 0xc0 |
|---|
| 173 | #define IPTOS_PREC_CRITIC_ECP 0xa0 |
|---|
| 174 | #define IPTOS_PREC_FLASHOVERRIDE 0x80 |
|---|
| 175 | #define IPTOS_PREC_FLASH 0x60 |
|---|
| 176 | #define IPTOS_PREC_IMMEDIATE 0x40 |
|---|
| 177 | #define IPTOS_PREC_PRIORITY 0x20 |
|---|
| 178 | #define IPTOS_PREC_ROUTINE 0x00 |
|---|
| 179 | |
|---|
| 180 | /* |
|---|
| 181 | * Definitions for options. |
|---|
| 182 | */ |
|---|
| 183 | #define IPOPT_COPY 0x80 |
|---|
| 184 | #define IPOPT_CLASS_MASK 0x60 |
|---|
| 185 | #define IPOPT_NUMBER_MASK 0x1f |
|---|
| 186 | |
|---|
| 187 | #define IPOPT_COPIED(o) ((o) & IPOPT_COPY) |
|---|
| 188 | #define IPOPT_CLASS(o) ((o) & IPOPT_CLASS_MASK) |
|---|
| 189 | #define IPOPT_NUMBER(o) ((o) & IPOPT_NUMBER_MASK) |
|---|
| 190 | |
|---|
| 191 | #define IPOPT_CONTROL 0x00 |
|---|
| 192 | #define IPOPT_RESERVED1 0x20 |
|---|
| 193 | #define IPOPT_DEBMEAS 0x40 |
|---|
| 194 | #define IPOPT_MEASUREMENT IPOPT_DEBMEAS |
|---|
| 195 | #define IPOPT_RESERVED2 0x60 |
|---|
| 196 | |
|---|
| 197 | #define IPOPT_EOL 0 /* end of option list */ |
|---|
| 198 | #define IPOPT_END IPOPT_EOL |
|---|
| 199 | #define IPOPT_NOP 1 /* no operation */ |
|---|
| 200 | #define IPOPT_NOOP IPOPT_NOP |
|---|
| 201 | |
|---|
| 202 | #define IPOPT_RR 7 /* record packet route */ |
|---|
| 203 | #define IPOPT_TS 68 /* timestamp */ |
|---|
| 204 | #define IPOPT_TIMESTAMP IPOPT_TS |
|---|
| 205 | #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */ |
|---|
| 206 | #define IPOPT_SEC IPOPT_SECURITY |
|---|
| 207 | #define IPOPT_LSRR 131 /* loose source route */ |
|---|
| 208 | #define IPOPT_SATID 136 /* satnet id */ |
|---|
| 209 | #define IPOPT_SID IPOPT_SATID |
|---|
| 210 | #define IPOPT_SSRR 137 /* strict source route */ |
|---|
| 211 | #define IPOPT_RA 148 /* router alert */ |
|---|
| 212 | |
|---|
| 213 | /* |
|---|
| 214 | * Offsets to fields in options other than EOL and NOP. |
|---|
| 215 | */ |
|---|
| 216 | #define IPOPT_OPTVAL 0 /* option ID */ |
|---|
| 217 | #define IPOPT_OLEN 1 /* option length */ |
|---|
| 218 | #define IPOPT_OFFSET 2 /* offset within option */ |
|---|
| 219 | #define IPOPT_MINOFF 4 /* min value of above */ |
|---|
| 220 | |
|---|
| 221 | #define MAX_IPOPTLEN 40 |
|---|
| 222 | |
|---|
| 223 | /* flag bits for ipt_flg */ |
|---|
| 224 | #define IPOPT_TS_TSONLY 0 /* timestamps only */ |
|---|
| 225 | #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */ |
|---|
| 226 | #define IPOPT_TS_PRESPEC 3 /* specified modules only */ |
|---|
| 227 | |
|---|
| 228 | /* bits for security (not byte swapped) */ |
|---|
| 229 | #define IPOPT_SECUR_UNCLASS 0x0000 |
|---|
| 230 | #define IPOPT_SECUR_CONFID 0xf135 |
|---|
| 231 | #define IPOPT_SECUR_EFTO 0x789a |
|---|
| 232 | #define IPOPT_SECUR_MMMM 0xbc4d |
|---|
| 233 | #define IPOPT_SECUR_RESTR 0xaf13 |
|---|
| 234 | #define IPOPT_SECUR_SECRET 0xd788 |
|---|
| 235 | #define IPOPT_SECUR_TOPSECRET 0x6bc5 |
|---|
| 236 | |
|---|
| 237 | /* |
|---|
| 238 | * Internet implementation parameters. |
|---|
| 239 | */ |
|---|
| 240 | #define MAXTTL 255 /* maximum time to live (seconds) */ |
|---|
| 241 | #define IPDEFTTL 64 /* default ttl, from RFC 1340 */ |
|---|
| 242 | #define IPFRAGTTL 60 /* time to live for frags, slowhz */ |
|---|
| 243 | #define IPTTLDEC 1 /* subtracted when forwarding */ |
|---|
| 244 | |
|---|
| 245 | #define IP_MSS 576 /* default maximum segment size */ |
|---|
| 246 | |
|---|
| 247 | __END_DECLS |
|---|
| 248 | |
|---|
| 249 | #endif /* netinet/ip.h */ |
|---|
